它其实是那个方向的方向导数。
Well, it's actually the directional derivative in that direction.
基本上是的，那就是方向导数。
And that's basically, yes, that's the directional derivative.
垂直于梯度的方向上,方向导数为零。
The directional derivative in a direction that's perpendicular to the gradient is basically zero.
我们来用方向导数，来描述一下相同的东西。
Let's say the same thing in terms of directional derivatives.
引入了相应于矢量场的方向导数。
The directional derivative according to the vector fields was introduced.
讨论了几种不同的方向导数和梯度的定义。
We discuss several different definitions of directional derivative and gradient vector.
提出了一种分析不对称外挂对飞机颤振影响的方向导数法。
A direction derivative method for the analysis of the effects of asymmetric stores on flutter speed is presented.
多元函数的连续性，偏导数，方向导数及可微性之间的关系。
The Relation between the Continuity, the Partial Derivatives, the Directional Derivatives and the Differentiability of a Function.
这个斜率就是此方向的方向导数,好了，我想我说的已经尽量图形化了。
And,the slope is going to be the directional derivative in that direction OK, I think that's as graphicas I can get.
而且为了保持图像特征，利用图像的方向导数局部地调整非线性扩散系数。
To preserve image features, the nonlinear diffusion coefficients are locally adjusted according to the directional derivatives of the image.
本文对半无限凸规划提出一个用方向导数表述的对偶问题，其对偶间隙为零。
The paper offers a dual problem for the semi-infinite convex programming by using the directional derivative with zero dual gap.
为了保持图像的特征和细节，文章利用图像的方向导数局部地调整正则系数。
To preserve image features and fine part, the regular coefficient is locally adjusted according to the directional derivatives of the image.
其中关于均方全微分和均方方向导数的定理是多指标随机过程所特有的结论。
Four of them, i. e. the theorems on the mean-square total differential and mean-square directional derivative are special conclusions of the multiple parameter stochastic processes.
其次讨论了一类新的广义梯度，这样的广义梯度能够充分利用已经有的方向导数的信息。
Secondly, the new generalized gradient is introduced to take advantage of the given directional derivative.
探讨二元函数的连续性、偏导数、方向导数以及可微性之间的关系，有助于我们对二元函数的学习。
A discussion of the relations between continuity, partial derivative, directional derivative and differentiability of binary function is helpful for us to study binary function.
其次，在曲面片内部，曲面拟合点和边界方向导数可以从参考曲线中通过构建虚拟等参线的方法得到。
Next, in the interior of the patches, surface fitting points and cross boundary derivatives are estimated from the reference curves by constructing virtual iso-parametric curves.
然后利用正切锥方向导数定义一类正切锥F凸函数类，并给出了（VP）正切锥真有效解的充分性条件；
Then, we define a class of tangent cone F convexity in terms of the tangent cone directional derivative, and prove the sufficient optimality conditions for (VP).
对于一般的非凸函数，其方向导数不具备任何凸性，可以利用一般正齐次函数的回收函数来给出它的一个上凸近似。
We research on describing preinvexity of functions in this paper by means of the density and weakly near convexity in the set.
借助于这些集合和函数的定义思想，本文定义了E-凸锥、伪拟E -凸函数、E -凸函数方向导数等几种更广义的概念。
In this paper, with the aid of idea of defining those sets and functions, the definitions of E -convex cone, pseudo-quasi- E -convex functions, E -direction derivative are discussed.
目前，红细胞边缘形态的检测一般都是利用传统的边缘检测方法，如边缘临近一阶或二阶方向导数法，利用简单的方法来检测边缘。
At present, the methods of edge detection of erythrocyte are using traditional theory such as edge one-order or second-order orient differential coefficient and using simple methods to detect edge.
首先导出了拉普拉斯、二阶梯度方向导数和侧向曲率三者之间的关系式，指出由于侧向曲率的影响，拉普拉斯在检测弯曲边界时必然产生定位误差。
Our results show that the level crossing curvature can cause location error of the Laplacian, particularly when the edges with large curvatures and small gradients.
首先导出了拉普拉斯、二阶梯度方向导数和侧向曲率三者之间的关系式，指出由于侧向曲率的影响，拉普拉斯在检测弯曲边界时必然产生定位误差。
Our results show that the level crossing curvature can cause location error of the Laplacian, particularly when the edges with large curvatures and small gradients.
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